I just hit a new one.
I was in a Novare Coast on my sniper, and was getting attacked by a marauder.
I used Covered Escape at the exact same time he used some root (I guess), and it rolled me away then I teleported back to where I was.
After that, the root lasted forever, even after 20s I could not use covered escape again or move at all. After I died, I could not move in the spawn room at all, and was forced to exit the warzone because I was permanently rooted.
I had the exact same bug. Not sure if it was caused by the same thing. But I was also stuck, until I was killed, then I was stuck in the spawner. And, yes. I tried /stuck with no luck.